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142
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3 Plant Radiation Study Interim Report #5- Part II Data on Gamma Shielding of Special Plutonium Samples
The calculation of shielding the thickness for plutonium is complicated by the many different energies represented in the gamma radiation emitted during decay of the plutonium isotopes. Dose rate predictions are also frequently confused by gamma from varying content of fission product impurities in the plutonium, as well as other gamma radiation induced through alpha and neutron particle absorption within the source material or its environment. After assumptions are made for these many factors the radiation data for shielding determination is still frequently inadequate because of wide variations in dose rates resulting from self-absorption. The degree if self-shielding is in turn dependent on nature of the plutonium compound, degree of compactness, weight, and over-all geometrical distribution of the source material. By preparing a variety of plutonium samples representing combinations of these varying factors, actual dose rates and gamma spectra, as obtained from them, can then be extrapolated for application to specific situations.
Date:
October 22, 1959
Creator:
Moulthrop, H. A.
Object Type:
Report
System:
The UNT Digital Library
The 7 by 10 Foot Wind Tunnel of the National Advisory Committee for Aeronautics
This report presents a description of the 7 by 10 foot wind tunnel and associated apparatus of the National Advisory Committee for Aeronautics. Included also are calibration test results and characteristic test data of both static force tests and autorotation tests made in the tunnel.
Date:
October 22, 1931
Creator:
Harris, Thomas A.
Object Type:
Report
System:
The UNT Digital Library
The 9/11 Commission and a National Counterterrorism Center: Issues and Options for Congress
This report examines a number of issues as Congress considers codification of an NCTC. One issue is whether the centralization remedy the commission has recommended fits the problems associated specifically with the 9/11 intelligence failure, and perhaps more broadly, the systematic maladies affecting the Intelligence Community. There are at least four options for congressional consideration: (1) NCTC with intelligence and operational planning duties, (2) NCTC restricted to an intelligence role, (3) NCTC restricted to an operational planning role, and (4) status quo plus-viewing the newly forming collected entity as a pilot potential NCTC. As one of its 41 recommendations, the 9/11 Commission recommended the creation of a National Counterterroism Center (NCTC).
Date:
October 22, 2004
Creator:
Masse, Todd
Object Type:
Report
System:
The UNT Digital Library
234-5 Project specification letter 234-41, 235-41 (Supplement D), Chemical Development Laboratory
This letter itemizes the miscellaneous equipment and supplies not previously specified which should be ordered to equip the 234-5 Chemical Development Laboratory. Equipment currently carried in store stock is not included in this list. The vendor is given only to identify the item or as a suggested source of supply.
Date:
October 22, 1948
Creator:
Work, J.B.
Object Type:
Report
System:
The UNT Digital Library
100th Anniversary of Women Winning the Vote: Reflections on the 2020 Centennial
Conversation among members of the Women's Suffrage Centennial Commission discussing the 100th anniversary of the 19th amendment and reflecting on the work of the Commission during 2020.
Date:
October 22, 2020
Creator:
Wall, Debra Steidel; Mikulski, Barbara; James, Kay Coles; Shogan, Colleen & Combs, Susan
Object Type:
Video
System:
The UNT Digital Library
Access Framework: Model Text (November 2011): An Act to Establish a Framework for Development of Offshore Wind Power
The model offshore wind power legislation focused on two aspects: compensation for use of ocean space and environmental assessment. In particular, the model legislation recommends the adoption of a rent and royalty scheme that is premised on high rent and low royalties in order to stimulate qualified bids from developers who are motivated to begin production as early as possible and to discourage sham bidding. The model legislation also includes a provision that sets royalties at a lower rate in the early years of project operation, and that provides states with the discretion to waive or defer rent and/or royalties for a period of time to meet the goals and objectives of energy independence, job creation, reduced emissions of conventional pollutants and greenhouse gases and increased state requirements for electricity from renewable sources. The environmental impact assessment (EIA) is structured to provide a systematic and interdisciplinary evaluation of the potential positive and negative life-cycle effects of a proposed offshore wind project on the physical, biological, cultural and socio-economic attributes of the project.
Date:
October 22, 2011
Creator:
Firestone, Jeremy & Crompton, Dawn Kurtz
Object Type:
Report
System:
The UNT Digital Library
Acoustic array methods for instrumentation of in situ coal gasification
None
Date:
October 22, 1974
Creator:
Sherman, J.W. & Woods, J.W.
Object Type:
Report
System:
The UNT Digital Library
Adaptive optimization and control using neural networks
Recent work has demonstrated the ability of neural-network-based controllers to optimize and control machines with complex, non-linear, relatively unknown control spaces. We present a brief overview of neural networks via a taxonomy illustrating some capabilities of different kinds of neural networks. We present some successful control examples, particularly the optimization and control of a small-angle negative ion source.
Date:
October 22, 1993
Creator:
Mead, W. C.; Brown, S. K.; Jones, R. D.; Bowling, P. S. & Barnes, C. W.
Object Type:
Article
System:
The UNT Digital Library
Advanced Oxidation Process
The design of new, high efficiency and cleaner burning engines is strongly coupled with the removal of recalcitrant sulfur species, dibenzothiophene and its derivatives, from fuels. Oxidative desulfurization (ODS) wherein these dibenzothiophene derivatives are oxidized to their corresponding sulfoxides and sulfones is an approach that has gained significant attention. Fe-TAML{reg_sign} activators of hydrogen peroxide (TAML is Tetra-Amido-Macrocyclic-Ligand) convert in a catalytic process dibenzothiophene and its derivatives to the corresponding sulfoxides and sulfones rapidly at moderate temperatures (60 C) and ambient pressure. The reaction can be performed in both an aqueous system containing an alcohol (methanol, ethanol, or t-butanol) to solubilize the DBT and in a two-phase hydrocarbon/aqueous system where the alcohol is present in both phases and facilitates the oxidation. Under a consistent set of conditions using the FeBF{sub 2} TAML activator, the degree of conversion was found to be t-butanol > methanol > ethanol. In the cases of methanol and ethanol, both the sulfoxide and sulfone were observed while for t-butanol only the sulfone was detected. In the two-phase system, the alcohol may function as an inverse phase transfer agent. The oxidation was carried out using two different TAML activators. In homogeneous solution, approximately 90% oxidation of the DBT …
Date:
October 22, 2003
Creator:
Horwitz, Colin P. & Collins, Terrence J.
Object Type:
Report
System:
The UNT Digital Library
Aerial Image Microscopes for the Inspection of Defects in EUV Masks
The high volume inspection equipment currently available to support development of EUV blanks is non-actinic. The same is anticipated for patterned EUV mask inspection. Once potential defects are identified and located by such non-actinic inspection techniques, it is essential to have instrumentation to perform detailed characterization, and if repairs are performed, re-evaluation. The ultimate metric for the acceptance or rejection of a mask due to a defect, is the wafer level impact. Thus measuring the aerial image for the site under question is required. An EUV Aerial Image Microscope (''AIM'') similar to the current AIM tools for 248nm and 193nm exposure wavelength is the natural solution for this task. Due to the complicated manufacturing process of EUV blanks, AIM measurements might also be beneficial to accurately assessing the severity of a blank defect. This is an additional application for an EUV AIM as compared to today's use In recognition of the critical role of an EUV AIM for the successful implementation of EUV blank and mask supply, International SEMATECH initiated this design study with the purpose to define the technical requirements for accurately simulating EUV scanner performance, demonstrating the feasibility to meet these requirements and to explore various technical approaches …
Date:
October 22, 2002
Creator:
Barty, A.; Taylor, J. S.; Hudyma, R.; Spiller, E.; Sweeney, D. W.; Shelden, G. et al.
Object Type:
Article
System:
The UNT Digital Library
Aggregation of dialkyl-substituted diphosphonic acids and its effect on metal ion extraction.
Solvent extraction reagents containing the diphosphonic acid group exhibit an extraordinary affinity for tri-, tetra- and hexavalent actinides. Their use has been considered for actinide separation and pre-concentration procedures. Solvent extraction data obtained with P,P{prime}-di(2-ethylhexyl) methane-, ethane- and butanediphosphonic acids exhibit features that are difficult to explain without Knowledge of the aggregation state of the extractants. Information about the aggregation of the dialkyl-substituted diphosphonic acids in aromatic diluents has been obtained using the complementary techniques of vapor pressure osmometry (VPO), small angle neutron scattering (SANS), infrared spectroscopy and molecular mechanics. The results from these techniques provide an understanding of the aggregation behavior of these extractants that is fully compatible with the solvent extraction data. The most important results and their relevance to solvent extraction are reviewed in this paper.
Date:
October 22, 1999
Creator:
Chiarizia, R.; Barrans, R. E., Jr.; Ferraro, J. R. Herlinger, A. W. & McAlister, D. R.
Object Type:
Article
System:
The UNT Digital Library
Agriculture and Related Agencies: FY2015 Appropriations
This report discusses various policy aspects of the Agriculture appropriations bill for FY2015, which funds the U.S. Department of Agriculture (USDA), except for the Forest Service.
Date:
October 22, 2014
Creator:
Monke, Jim
Object Type:
Report
System:
The UNT Digital Library
Air Quality: Multi-Pollutant Legislation
One approach being proposed to more cost-effectively achieve national air quality goals is a "multi-pollutant" strategy -- a framework based on a consistent set of emissions caps, implemented through emissions trading. This report discusses this strategy and related legislation.
Date:
October 22, 2002
Creator:
Parker, Larry & Blodgett, John E.
Object Type:
Report
System:
The UNT Digital Library
Airborne Laser (ABL): Issues for Congress
This report examines the airborne laser (ABL) program and budget status. It also examines a variety of related issues, including the questionable maturity of ABL technologies, the number of ABL platforms the United States should acquire, and to what degree the United STates should invest in alternative technologies in the event that the ABL may not prove successful. This report does not provide a detailed technical assessment of the ABL program (see CRS Report RL30185, The Airborne Laser Anti-Missile Program).
Date:
October 22, 2003
Creator:
Bolkcom, Christopher & Hildreth, Steven A.
Object Type:
Report
System:
The UNT Digital Library
The Americans with Disabilities Act (ADA): Proposed Employment Regulations
This report addresses the Proposed Employment Regulations of the Americans with Disabilities Act (ADA).
Date:
October 22, 2009
Creator:
Jones, Nancy Lee
Object Type:
Report
System:
The UNT Digital Library
Analysis and interpretation of a high density tandem negative ion source
In the last few years the development of tandem-discharge hydrogen-negative-ion-source systems has proceeded along both experimental and theoretical lines. To some extent these developments have proceeded independently, either the available theoretical model was inadequate to account for a specific geometrical configuration, or the experimental data was not sufficient to provide adequate input parameters for calculation. In the tandem system described here the electron temperature, electron density, and other relevant parameters have been obtained for a high-density system whose electron densities range up to 3 - 5 x 10/sup 12/ electrons cm/sup -3/. The model calculation for the atomic processes has been extended to include both electron density and electron temperature spatial variations through the second chamber. These spatial variations are essential for an adequate interpretation of tandem systems where steep density gradients may occur beyond the magnetic filter region. In this paper we shall combine the experimental density data with the new spatially dependent atomic model for the purpose of attempting a correlation of the observed and calculated current densities. 9 refs., 8 figs., 3 tabs.
Date:
October 22, 1986
Creator:
Hiskes, J.R.; Lietzke, A.F. & Hauck, C.
Object Type:
Article
System:
The UNT Digital Library
Analysis and Simulation of Beam Ion Instability in ILC Damping Ring with Multi-gas Species
None
Date:
October 22, 2012
Creator:
Wang, Lanfa & Pivi, Mauro
Object Type:
Article
System:
The UNT Digital Library
An analysis of the tracking performances of two straight-wing and two swept-wing fighter airplanes with fixed sights in a standardized test maneuver
From Introduction: "This report presents the initial study, the tracking performance of typical fighter airplanes with fixed gunsights. The types of airplanes tested afford two comparisons of particular interest: that between typical World War II and currently operational fighters of greatly increased speed and altitude, and that between conventional and irreversabile power-boosted controls with artificial feel, both installed on the same airframe."
Date:
October 22, 1953
Creator:
Rathert, George A., Jr.; Gadeberg, Burnett L. & Ziff, Howard L.
Object Type:
Report
System:
The UNT Digital Library
Angular Dependence of Jet Quenching Indicates Its Strong Enhancement Near the QCD Phase Transition
We study dependence of jet quenching on matter density, using 'tomography' of the fireball provided by RHIC data on azimuthal anisotropy v{sub 2} of high p{sub t} hadron yield at different centralities. Slicing the fireball into shells with constant (entropy) density, we derive a 'layer-wise geometrical limit' v{sub 2}{sup max} which is indeed above the data v{sub 2} < v{sub x}{sup max}. Interestingly, the limit is reached only if quenching is dominated by shells with the entropy density exactly in the near-T{sub c} region. We show two models that simultaneously describe the high p{sub t} v{sub 2} and R{sub AA} data and conclude that such a description can be achieved only if the jet quenching is few times stronger in the near-T{sub c} region relative to QGP at T > T{sub c}. One possible reason for that may be recent indications that the near-T{sub c} region is a magnetic plasma of relatively light color-magnetic monopoles.
Date:
October 22, 2008
Creator:
Liao, Jinfeng & Shuryak, Edward
Object Type:
Article
System:
The UNT Digital Library
Annual Hanford Seismic Report for Fiscal Year 1998
No abstract is available for this document at this time.
Date:
October 22, 1998
Creator:
Hartshorn, Donald C.; Reidel, Steve P. & Rohay, Alan C.
Object Type:
Report
System:
The UNT Digital Library
Annuities and the Securities and Exchange Commission Proposed Rule 151A
The Securities and Exchange Commission (SEC) recently released a proposed rule that would effectively reclassify equity indexed annuities as a security product in addition to being an insurance product. This report presents the different types of annuities, explains the taxation of annuities, and disentangles the federal and state roles in the regulation of annuities. It outlines the proposed SEC rule and its current status.
Date:
October 22, 2008
Creator:
Webel, Baird
Object Type:
Report
System:
The UNT Digital Library
Application of the FORSS sensitivity code system to fast reactor analysis
The FORSS Sensitivity Analysis Code System is described in terms of its objectives and present capabilities. An example is made of a problem specified by the Processing Methods Testing Subcommittee of the Code Evaluation Working Group, i.e., the determination of integral parameters, sensitivities to cross- section data, methods and data uncertainties, and required cross-section accuracies for an infinite media of ZPR 6/7 core composition. (auth)
Date:
October 22, 1975
Creator:
Weisbin, C. R.; Oblow, E. M. & Mynatt, F. R.
Object Type:
Article
System:
The UNT Digital Library
The Appointment Process for U.S. Circuit and District Court Nominations: An Overview
The report's exclusive focus is the process of appointment of U.S. circuit and district court judges through presidential nomination and Senate confirmation.
Date:
October 22, 2014
Creator:
Rutkus, Denis Steven
Object Type:
Report
System:
The UNT Digital Library
The APS control system network upgrade.
When it was installed,the Advanced Photon Source (APS) control system network was at the state-of-the-art. Different aspects of the system have been reported at previous meetings [1,2]. As loads on the controls network have increased due to newer and faster workstations and front-end computers, we have found performance of the system declining and have implemented an upgraded network. There have been dramatic advances in networking hardware in the last several years. The upgraded APS controls network replaces the original FDDI backbone and shared Ethernet hubs with redundant gigabit uplinks and fully switched 10/100 Ethernet switches with backplane fabrics in excess of 20 Gbits/s (Gbps). The central collapsed backbone FDDI concentrator has been replaced with a Gigabit Ethernet switch with greater than 30 Gbps backplane fabric. Full redundancy of the system has been maintained. This paper will discuss this upgrade and include performance data and performance comparisons with the original network.
Date:
October 22, 1999
Creator:
Sidorowicz, K. v.; Leibfritz, D. & McDowell, W. P.
Object Type:
Article
System:
The UNT Digital Library